An expert is a person who has made all the mistakes that can be made in a very narrow field.
The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.
Never express yourself more clearly than you are able to think.
No, no, you’re not thinking; you’re just being logical.
Prediction is very difficult, especially about the future.
Every sentence I utter must be understood not as an affirmation, but as a question.
Your theory is crazy, but it’s not crazy enough to be true.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.
There are trivial truths and the great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.
A physicist is just an atom’s way of looking at itself.